"Green technologies" (greentech) is a term used to describe highly interdisciplinary, environmentally friendly and sustainable approaches and systems. As such, it's a field that greatly benefits from a multi-disciplinary research approach.

Green Technologies and Sustainability encourages and promotes interdisciplinary research and development to important technological and theoretical developments in greentech and sustainability issues. The journal explores the field's relevance to multiple disciplines, including environmental science, environmental engineering, civil engineering, electrical and computer engineering, green chemistry, green energy, sustainable infrastructure, and so on. We also consider greentech's importance for monitoring, modelling and conserving the natural environment and resources, reducing carbon emissions and energy consumption, mitigating air, water and soil pollution and reducing waste, recover energy and resources, and supporting environmental and socioeconomic sustainability. Greentech include technologies and systems that use less energy and resources, draw on renewable resources, produce clean energy and help reduce and repair environmental harm. Despite the fact that many topics in green technologies are still in their infancy, they have attracted many research interests as people become more aware of the effects of climate change and the degradation of the environments.

Topics covered by the journal include but not limited to:

• Concept, theory, fundamental, metric, analysis:
• Green and sustainable systems analysis
• Green metrics
• Green and sustainable environments
• Novel green and sustainability concepts
• Carbon neutrality
• Energy efficiency and resource efficiency
• Mathematical models for green and sustainable technologies
• Life cycle analysis, assessment, and approaches
• Green and sustainable engineering
• Modeling and theory for green and sustainable management
• Circular economy
• Green and sustainable complex, dynamic environmental/economic/social systems
• Issues for sustainable development goals
• Architecture, designs, algorithms, approaches
• Green and sustainable architecture, strategies, algorithms, protocols, scheduling, and/or designs
• Measurement and profiling of green issues
• Low cost and energy-efficient designs
• Performance characterization, evaluation, optimization and design Trade-Offs
• Use of cognitive principles to achieve green objectives
• Relevant experimental test-beds and results
• Relevant standardization, policy, and regulation
• Pollution control technologies
• Recycling and reuse
• Strategic management for sustainability
• Approaches to achieve sustainable development goals
• Domain technologies
• Environmental engineering
• Air and water pollution and control, including sustainable wastewater treatment
• Green and sustainable waste generation, separation, processing, and disposal
• Sustainable waste management technologies promoting the reuse and recycling of waste
• Green and sustainable manufacturing
• Green and sustainable chemical engineering
• Sustainable transportation and logistics
• Environmental management and decision making for sustainability
• Carbon neutrality technologies
• Noise pollution detection, assessment, and control
• Ocean and coastal pollution and mitigation
• Green and sustainable supply chain management
• Green electronics, devices, and systems
• Environmental science
• Green chemistry
• Soil, land pollution and remediation
• Environmental modelling
• Life cycle impact assessment and sustainability assessment
• Green and sustainable water processing
• Green energy technologies
• Renewable and sustainable energy, including solar, wind, hydropower, geothermal, biomass and ocean energy, and renewable hydrogen and energy systems
• Green and sustainable energy for transportation, including biofuels, electric vehicles and hydrogen-powered vehicles solution
• Green, clean, and sustainable power generation and transmission
• Energy storage and battery technologies
• High-performance sustainable energy systems
• Smart grids and smart grid networks
• Advanced metering infrastructure and smart meter technologies
• Energy harvesting, recycling, and wireless power transfer
• Green digital and information technologies
• Environmental monitoring
• Environmental informatics
• Green and sustainable communications, computing, and systems
• Big data and artificial intelligence meet green challenges
• Artificial intelligence aided environmental image or data analysis and decision making
• Information and communications technologies for sustainable development goals
• Electromagnetic pollution mitigation
• Sustainable security and privacy
• Security and privacy Issues for green and sustainable technologies
• Green and sustainable intelligent transportation systems
• Green data centers and cloud computing
• Green finance and economics
• Green and sustainable materials
• Green and sustainable civil engineering and building
• Green and sustainable cities